administration. but if these latest accusations prove true, is now the time for u.s. boots on the ground? here now to tell us is house intelligence committee chair mike rogers. he's a republican from michigan. keith and jimmy are still with us. chairman rogers, thank you very much, sir. is there truly conclusive evidence that one side or the other has really used chemical weapons. >> larry, when i look at all of the evidence, all of the intelligence, and the body of reporting over the last two years, i come to the conclusion with a high probability that the assad regime has used, at least in limited quantities, chemical weapons. they've also put them in a position to be used, and i believe, and the intelligence community, i think, believes that they have serious intent to use them under the right circumstances. so the red line that the president talked about, august 20th, was, if they move chemical weapons or use chemical weapons, that changes the calculus.